<template>
    <div class="login">
        <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
            <h3 class="title flex justify-center items-center">
                <div>若依后台管理系统</div>
            </h3>
            <el-form-item prop="username">
                <el-input v-model="loginForm.username" type="text" size="large" auto-complete="off"
                    :placeholder="t('login.username')">
                    <template #prefix><svg-icon icon-class="user" class="el-input__icon input-icon" /></template>
                </el-input>
            </el-form-item>
            <el-form-item prop="password">
                <el-input v-model="loginForm.password" type="password" size="large" auto-complete="off"
                    :placeholder="t('login.password')" @keyup.enter="handleLogin">
                    <template #prefix><svg-icon icon-class="password" class="el-input__icon input-icon" /></template>
                </el-input>
            </el-form-item>
            <el-form-item prop="captchaKey" v-if="captchaEnabled">
                <el-input v-model="loginForm.captchaKey" size="large" auto-complete="off"
                    :placeholder="t('login.captchaCode')" style="width: 63%" @keyup.enter="handleLogin">
                    <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>
                </el-input>
                <div class="login-code">
                    <img :src="codeUrl" @click="getCode" class="login-code-img" />
                </div>
            </el-form-item>
            <div class="tips">
                <el-checkbox v-model="loginForm.remember">记住密码</el-checkbox>
                <lang-select class="  relative top-0 right-0" />
            </div>
            <el-form-item style="width: 100%">
                <el-button :loading="loading" size="large" type="primary" style="width: 100%"
                    @click.prevent="handleLogin">
                    <span v-if="!loading">{{ t('login.login') }}</span>
                    <span v-else>登 录 中...</span>
                </el-button>
                <div style="float: right" v-if="register">
                    <router-link class="link-type" :to="'/register'">立即注册</router-link>
                </div>
            </el-form-item>
        </el-form>
        <!--  底部  -->
        <div class="el-login-footer">
            <span>Copyright © 2018-2023 ruoyi.vip All Rights Reserved.</span>
        </div>
    </div>
</template>

<script setup lang="ts">
import { getCodeImg } from '@/api/login';
import Cookies from 'js-cookie';
import { encrypt, decrypt } from '@/utils/jsencrypt';
import useUserStore from '@/store/modules/user';
import { useRouter } from 'vue-router';
import { FormInstance } from 'element-plus';
import { ref } from 'vue';
import i18n from '@/lang/index';
const { t } = i18n.global;
const userStore = useUserStore();
const router = useRouter();
const loginForm = ref<any>({
    username: 'admin',
    password: 'admin123',
    remember: false,
    captchaKey: "",
    uuid: '',
});

const loginRules = {
    username: [{ required: true, trigger: 'blur', message: t('login.message.username.required') }],
    password: [{ required: true, trigger: 'blur', message: t('login.message.password.required') }],
    captchaKey: [{ required: true, trigger: 'change', message: t('login.message.captchaCode.required') }],
};

const codeUrl = ref('');
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(true);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);
const loginRef = ref<FormInstance>();

function handleLogin() {
    loginRef.value?.validate(valid => {
        if (valid) {
            loading.value = true;
            // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
            if (loginForm.value.remember) {
                Cookies.set('username', loginForm.value.username, { expires: 30 });
                const enPwd = encrypt(loginForm.value.password);
                if (enPwd) {
                    Cookies.set('password', enPwd, { expires: 30 });
                }
                if (loginForm.value.remember) {
                    Cookies.set('remember', String(loginForm.value.remember), { expires: 30 });
                }
            } else {
                // 否则移除
                Cookies.remove('username');
                Cookies.remove('password');
                Cookies.remove('remember');
            }
            let user = {
                username: loginForm.value.username,
                password: encrypt(loginForm.value.password),
                uuid: loginForm.value.uuid,
                captchaKey: loginForm.value.captchaKey,
            }
            // 调用action的登录方法
            userStore
                .login(user)
                .then(() => {
                    router.push({ path: redirect.value || '/' });
                })
                .catch(() => {
                    loading.value = false;
                    // 重新获取验证码
                    if (captchaEnabled.value) {
                        getCode();
                    }
                });
        }
    });
}

function getCode() {
    getCodeImg().then((res: any) => {
        codeUrl.value = res.data.img;
        loginForm.value.uuid = res.data.uuid;
        loginForm.value.captchaKey = "";
    });
}

function getCookie() {
    const username = Cookies.get('username');
    const password = Cookies.get('password');
    const remember = Cookies.get('remember');
    loginForm.value = {
        username: username === undefined ? loginForm.value.username : username,
        password: password === undefined ? loginForm.value.password : decrypt(password) || '',
        remember: remember === undefined ? false : Boolean(remember),
    };
}

getCode();
getCookie();
</script>

<style lang="scss" scoped>
.login {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    background-image: url('../assets/images/login-background.jpg');
    background-size: cover;

    .title {
        margin: 0px auto 30px auto;
        text-align: center;
        color: #707070;
    }

    .login-form {
        border-radius: 6px;
        background: #ffffff;
        width: 400px;
        padding: 25px 25px 5px 25px;

        ::v-deep .el-form-item__content {
            justify-content: space-between;
        }

        .el-input {
            height: 40px;

            input {
                height: 40px;
            }
        }

        .input-icon {
            height: 39px;
            width: 14px;
            margin-left: 0px;
        }

        .login-code {
            .login-code-img {
                height: 40px;
                cursor: pointer;
                vertical-align: middle;
            }
        }

        .tips {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
    }

    .el-login-footer {
        height: 40px;
        line-height: 40px;
        position: fixed;
        bottom: 0;
        width: 100%;
        text-align: center;
        color: #fff;
        font-family: Arial;
        font-size: 12px;
        letter-spacing: 1px;
    }
}
</style>
